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136 Sun Fire V20z and Sun Fire V40z Servers, Server Management Guide • May, 2004
Under certain circumstances, it might be necessary to send a serial-break sequence to
the platform OS (for example, to simulate the SysRq key when
CONFIG_MAGIC_SYSRQ is defined and enabled in a Linux kernel).
To perform this operation, use the following sequence:
^Ecl0
(Control-E, followed by the lowercase letter “C”, the lowercase letter “L” and the
digit “0”.)
The platform console command responds by displaying the string [halt
sent], confirming that the break sequence has been generated.
In the event that console output becomes corrupted, ^Ecd ^Eco usually restores
proper operation; this problem is normally due to flow-control issues.
f Forces an attach read/write.
g Groups information.
i Information dump.
L Toggles logging on/off.
l? Breaks the sequence list.
l0 Sends a break per configuration file.
l1-9 Sends a specific break sequence.
o Re-opens the tty and log file.
p Replays the last 60 lines.
r Replays the last 20 lines.
s Spy read only.
u Shows the host status.
v Shows the version information.
w Shows who is logged on to this console.
x Shows the console baud information.
z Suspends the connection.
<cr> Ignores/aborts the command.
? Prints this message.
^R Replays the last line.
\ooo Sends the character by octal code.
TABLE F-5 Serial-Console Values
Character Function